Do Not Disturb Me!!!

Stop! Don't go in there.

PHOTOS: Wackiest Hotel Do-Not-Disturb Signs

Telling somebody at a hotel to leave you alone used to be pretty simple. But not anymore. As hotels look to differentiate themselves in a crowded marketplace, they have revamped the traditional "Do-Not-Disturb" sign to be creative, funny and -- in some cases -- in your face. Here are some of our favorite picks.

The Ritz-Carlton, Cleveland offers special signs to make sure that "four-legged, furry family member is recognized." Dog signs say "Woof!" and cat signs say "Meow." (Courtesy The Ritz-Carlton Cleveland)